Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Category
Mineral (Specifically A Variety Of Chalcedony, Which Is A Microcrystalline Quartz)
Browse mineral (specifically a variety of chalcedony, which is a microcrystalline quartz) specimens identified by the Rock Identifier community.
Chert / Flint
Microcrystalline or cryptocrystalline quartz (SiO2)
sedimentary
Quartzite
Quartzite (SiO2)
metamorphic
Emerald in Matrix (Quartz/Schist)
Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities
mineral
Chert
SiO2 (Microcrystalline Quartz)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Ametrine
SiO2 (silicon dioxide)
Mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO₂)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Granite Pegmatite
Phaneritic Plutonic Igneous Rock
igneous
Chert (Flint Nodules)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Iron-stained)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Amygdaloidal Basalt with Epidote/Chlorite
Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))
igneous
Basalt with Epidote Veining
Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)
igneous
Honey Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Ruby (Pinkish-Red)
Corundum (Al2O3 with Chromium trace)
mineral
Quartz in Host Rock
Silicon Dioxide (SiO2) in Rhyolite or Granite matrix
igneous
Beryl (var. Heliodor or Aquamarine)
Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Nodule)
Microcrystalline Quartz (SiO2)
sedimentary
Shale with Iron Oxide Staining
Fissile Mudstone (primarily clay minerals and quartz)
sedimentary
Emerald
Beryl (Be₃Al₂Si₆O₁₈), specifically the green variety colored by trace amounts of chromium or vanadium.
Mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Red Jasper (with Quartz Veins)
Jasper (var. chert, SiO₂)
Sedimentary Rock (technically chert, a microcrystalline quartz)
Conglomerate
Conglomerate rock
sedimentary
Chert Geode with Quartz Druzy
Microcrystalline Quartz (SiO2) with macrocrystalline Quartz
sedimentary
Sandstone with Iron Staining
Clastic sedimentary rock (primarily SiO2 with Fe2O3)
sedimentary
Ocean Jasper
Spherulitic Chalcedony (SiO2)
sedimentary
Prasiolite and Quartz Crystal Cluster
Quartz (SiO2); Prasiolite is a variety of Quartz
mineral
Transit Token (RTD Denver)
Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)
not a rock or mineral (anthropogenic material)
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Chert (Gravel / Pebble)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (and Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Chert / Flint
Chert (Microcrystalline Quartz, SiO2)
sedimentary
Ferruginous Sandstone
Sandstone with iron oxide (Hematite/Limonite) cement
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Chert (̑SiO2)
sedimentary
Fossiliferous Chert with Brachiopod Impression
Chert (SiO2) containing Brachiopoda fossil remains
sedimentary
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions
Mineral
Jasper with Quartz inclusion
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary